now I can understand airliners being grounded due to the level that the ash is at, and understandable if there was ash falling from the sky, a la Pompeii,
but to ground helicopters too, which can quite legally fly around at 500' quite slowly in comparison to the big jets, just seems a bit of overkill to me, especially from where i'm sitting, I can see for over 10k easily.
it's just someone somewhere afraid to say it's ok to go.
